Efectividad de la vacuna para SARS-CoV-2 sobre hospitalizaciones por COVID-19 durante la cuarta ola epidémica en Querétaro, México Vacunación y hospitalización en COVID-19

Objetivo: Evaluar el efecto protector de la vacuna para SARS-CoV-2 para hospitalizaciones por COVID-19 durante la cuarta ola epidémica en Querétaro, México. Métodos: Diseño de cohorte retrospectiva en pacientes con COVID-19 durante la cuarta ola (19 de diciembre de 2021 al 9 de enero de 2022). Grupos expuestos, antecedente de vacuna anti COVID-19 (vacuna de adenovirus modificado genéticamente y vacuna de ácido ribonucleico mensajero), grupo no expuesto, no vacuna. El diagnóstico de COVID-19 se realizó con la prueba antigénica rápida en exudado orofaringeo, prueba practicada entre el primero y quinto día del inicio de sintomatología. Se incluyeron todos los pacientes que acudieron al servicio de salud por sintomatología, con prueba positiva y dos dosis de la vacuna. El análisis estadístico incluyó chi cuadrada, riesgo relativo e intervalo de confianza para riesgo relativo. Resultados: Se estudiaron 52 pacientes con vacuna de adenovirus modificado genéticamente, 119 con vacuna de ácido ribonucleico mensajero y 336 pacientes no vacunados. En pacientes no vacunados la incidencia de hospitalización fue 62,2%, en pacientes con vacuna adenovirus modificado genéticamente la hospitalización fue 23,1% (p<0.001), riesgo relativo de 0,37 (IC 95%; 0,22-0,61); y en pacientes con vacuna de ácido ribonucleico mensajero la incidencia de hospitalización fue 1,7% (p<0.001), riesgo relativo de 0,03 (IC 95%; 0,006-0,10). Conclusiones: La vacuna anti COVID-19 en el ámbito poblacional es efectiva para evitar hospitalización en pacientes que presentan cuadro agudo de COVID-19 en la cuarta ola.

Objective: To assess the protective effect of the vaccine against SARS-CoV-2 upon hospitalizations due to COVID-19 during the fourth epidemic wave in Queretaro, Mexico. Methods: This investigation was designed as a retrospective cohort study in patients with COVID-19 during the fourth wave of the epidemic (December 19th, 2021, to January 9th, 2022). The exposed group consisted in those subjects who had received a vaccine against COVID-19 (genetically modified adenovirus vaccine and messenger ribonucleic acid vaccine); and the non-exposed group consisted in those people who were not vaccinated. Diagnosis of COVID-19 was made with a rapid antigenic test in oropharyngeal exudate, and the test was performed between the first and fifth day after the onset of symptoms. All patients who came to healthcare facilities because of symptoms, with a positive test and having received two doses of the vaccine. Statistical analysis included chi-square, relative risk, and confidence intervals (CI) for the relative risk. Results: Fifty-two patients who received a genetically modified vaccine, 119 who received a messenger ribonucleic acid vaccine, and 336 non vaccinated subjects were included in the study. The frequency of hospitalization was 62,2% in non-vaccinated persons, this rate was 23,1% (p<0.001), and relative risk was 0,37 (95% CI; 0,22-0,61) in those who received a genetically modified adenovirus vaccine, and it was 1.7% (p<0.001), and relative risk was 0,03 (95% CI; 0,006-0,10) in those who received the messenger ribonucleic acid vaccine. Conclusions: From a population point of view, the vaccine against COVID-19 was effective for preventing hospitalization in patients with acute COVID-19 disease during the fourth epidemic wave.

Autologous stem cell transplantation may be curative for patients with follicular lymphoma with early therapy failure without the need for immunotherapy.

OBJECTIVE/BACKGROUND: Patients with follicular lymphoma (FL) with early therapy failure (ETF) within 2 years of frontline therapy have poor overall survival (OS). We recently reported the results of autologous stem cell transplantation (ASCT) in patients from the Grupo Español de Linfomas y Trasplantes de Médula Ósea (GELTAMO) registry treated with rituximab prior to ASCT and with ETF after first-line immunochemotherapy, leading to 81% 5-year OS since ASCT. We explored whether ASCT is also an effective option in the pre-rituximab era-that is, in patients treated in induction and rescued only with chemotherapy. METHODS: ETF was defined as relapse/progression within 2 years of starting first-line therapy. We identified two groups: the ETF cohort (n = 87) and the non-ETF cohort (n = 47 patients receiving ASCT but not experiencing ETF following first-line therapy). RESULTS: There was a significant difference in 5-year progression-free survival between the ETF and non-ETF cohorts (43% vs. 57%, respectively; p = .048). Nevertheless, in patients with ETF with an interval from first relapse after primary treatment to ASCT of <1 year, no differences were observed in 5-year progression-free survival (48% vs. 66%, respectively; p = .44) or in 5-year OS (69% vs. 77%, p = .4). Patients in the ETF cohort transplanted in complete remission showed a plateau in the OS curves, at 56%, beyond 13.7 years of follow-up. CONCLUSION: ASCT may be a curative option for ETF in patients who respond to rescue chemotherapy, without the need for immunotherapy or other therapies, and should be considered as an early consolidation, especially in patients with difficult access to rituximab.

Biopsia de médula ósea en el linfoma de Hodgkin. Comparación con la PET-TC en 65 pacientes / Bone marrow trephine biopsy in Hodgkin's lymphoma. Comparison with PET-CT scan in 65 patients

Fundamento y objetivo: Comparar la biopsia de médula ósea (BMO) y la PET/CT en la detección de la afectación medular en el linfoma de Hodgkin. Material y métodos: Análisis retrospectivo de 65 pacientes con realización de ambas pruebas en la estadificación inicial o en recaída con especial atención al patrón de la PET/CT. Resultados: En 3 pacientes (4,6%) la BMO mostró afectación medular, siendo la PET/CT positiva en todos ellos: 2 con patrón difuso+multifocal y uno solo difuso. En 11 pacientes más (total 14/65, 21%) se estimó que había afectación medular ósea por PET/CT al tener un consumo de médula ósea superior al hepático. El patrón fue focal único en 2 casos, multifocal en 5, difuso en 3 casos y difuso+multifocal en uno. En estos últimos 4 casos la BMO mostró una mielopatía inespecífica. Conclusiones: La PET/CT detecta todos los casos con BMO afectada y muchos que se escapan a la biopsia; sin embargo, cuando el patrón de captación es difuso puede ser por afectación o por hiperplasia reactiva y en esos casos debería mantenerse la BMO (AU)

Background and objectives: To compare bone marrow biopsy (BMB) and PET/CT in detecting bone marrow involvement in Hodgkin's lymphoma. Material and methods: Retrospective analysis of 65 patients with both tests in the initial staging or in relapse with special attention to the PET/CT uptake pattern. Results: In 3 patients (4.6%), the BMB showed bone marrow involvement with the PET/CT being positive in them all: 2 with diffuse+multifocal pattern and one diffuse only. In 11 additional patients (total 14/65, 21%), bone marrow involvement was diagnosed by PET/CT because bone marrow uptake was above hepatic one. The pattern was focal only in 2 cases, multifocal in 5, diffuse in 3 and diffuse+multifocal in one. In these last 4 cases the BMB showed an unspecific myelopathy. Conclusions: PET/CT detects all cases with BMB affected and many that escape to biopsy, however when the uptake pattern is diffuse it could be by involvement or reactive hyperplasia and in those cases the BMB should be done (AU)

Bone marrow trephine biopsy in Hodgkin's lymphoma. Comparison with PET-CT scan in 65 patients. / Biopsia de médula ósea en el linfoma de Hodgkin. Comparación con la PET-TC en 65 pacientes.

BACKGROUND AND OBJECTIVES: To compare bone marrow biopsy (BMB) and PET/CT in detecting bone marrow involvement in Hodgkin's lymphoma MATERIAL AND METHODS: Retrospective analysis of 65 patients with both tests in the initial staging or in relapse with special attention to the PET/CT uptake pattern. RESULTS: In 3 patients (4.6%), the BMB showed bone marrow involvement with the PET/CT being positive in them all: 2 with diffuse+multifocal pattern and one diffuse only. In 11 additional patients (total 14/65, 21%), bone marrow involvement was diagnosed by PET/CT because bone marrow uptake was above hepatic one. The pattern was focal only in 2 cases, multifocal in 5, diffuse in 3 and diffuse+multifocal in one. In these last 4 cases the BMB showed an unspecific myelopathy. CONCLUSIONS: PET/CT detects all cases with BMB affected and many that escape to biopsy, however when the uptake pattern is diffuse it could be by involvement or reactive hyperplasia and in those cases the BMB should be done.

Autologous Stem Cell Transplantation for Follicular Lymphoma: Favorable Long-Term Survival Irrespective of Pretransplantation Rituximab Exposure.

High-dose chemotherapy supported by autologous stem cell transplantation (HDT/ASCT) has contributed to modify the natural history of follicular lymphoma (FL); however, an overall survival (OS) benefit has been demonstrated at relapse only after a rituximab-free chemotherapy regimen. A total of 655 patients with FL were reported to the Spanish GELTAMO (Grupo Español de Linfomas y Trasplantes de Médula Ósea) registry and underwent first ASCT between 1989 and 2007. A total of 203 patients underwent ASCT in first complete response (CR1), 174 in second complete response (CR2), 28 in third complete response (CR3), 140 in first partial response (PR1), 81 in subsequent PR, and 29 with resistant/refractory disease; 184 patients received rituximab before ASCT. With a median follow-up of 12 years from ASCT, median progression-free survival (PFS) and overall survival (OS) were 9.7 and 21.3 years, respectively. Actuarial 12-year PFS and OS were 63% (95% confidence interval [CI], 58%-68%) and 73% (95% CI, 68%-78%), respectively, for patients in CR (with a plateau in the curve beyond 15.9 years), 25% (95% CI, 19%-28%) and 49% (95% CI 42%-56%), respectively, for patients in PR, and 23% (95% CI, 8%-48%) and 28% (95% CI, 9%-45%), respectively, for patients with resistant/refractory disease (P < .001). In patients who received rituximab before ASCT, the estimated 9-year PFS and OS from ASCT were 59.5% (95% CI, 51%-67%) and 75% (95% CI, 68%-83%), respectively. Interestingly, for patients who underwent transplantation in CR ≥2 or PR ≥2 who had received rituximab before ASCT (n = 90), 9-year PFS and OS were 61% (95% CI, 51%-73%) and 75% (95% CI, 65%-80%), respectively, with no relapses occurring beyond 5.1 years after ASCT. The cumulative incidence of second malignancies in the global series was 6.7% at 5 years and 12.8% at 10 years. This analysis strongly suggests that ASCT is a potentially curative option for eligible patients with FL. In the setting of relapse, it is of especial interest in pretransplantation rituximab-sensitive patients with FL.

Hyperthermic intraoperative intraperitoneal chemotherapy (HIPEC) with primary or secondary cytoreductive surgery in the treatment of advanced epithelial ovarian cancer.

BACKGROUND: Peritoneal dissemination is the most common route of spread of epithelial ovarian cancer (EOC). Cytoreductive surgery (CRS) followed by platinum-based systemic chemotherapy is the current standard treatment in advanced stages, with suboptimal results. The aim of this study is to analyze the outcome of advanced EOC treated with CRS plus hyperthermic intraoperative intraperitoneal chemotherapy (HIPEC) combined with systemic chemotherapy. METHODS: We analyze a cohort of women treated with CRS plus HIPEC for peritoneal carcinomatosis secondary to EOC from May 2007 to December 2014. We included both patients with peritoneal disease at first diagnosis of EOC and peritoneal recurrences after initial treatment. RESULTS: We performed 61 CRS with HIPEC procedures, 31 cases as primary treatment (4 as upfront therapy and 27 after neoadjuvant chemotherapy) and 30 as secondary treatment (recurrences). Median Peritoneal Carcinomatosis Index (PCI) was 9; the cytoreduction was optimal in 92% of the procedures. Severe morbidity (Grade III-IV of Clavien-Dindo classification) was 29.5%, without mortality. Median follow-up was 23 months and median disease-free survival (DFS) was 14 months (14 in primary surgery group and 17 in recurrence group, P=0.51). Median overall survival (OS) was 57 months; in primary surgery group, OS was 96.8% at 1 year, and 55% at 5 years, and median OS was not reached; OS in recurrence group was 89.3% at 1 year and 47.1% at 5 years, and median OS was 57 months. CONCLUSIONS: CRS with HIPEC is a treatment option for EOC with good results in terms of morbidity and survival, in experienced centers.

Benefit from autologous stem cell transplantation in primary refractory myeloma? Different outcomes in progressive versus stable disease.

BACKGROUND: Several studies of autologous stem cell transplantation in primary refractory myeloma have produced encouraging results. However, the outcome of primary refractory patients with stable disease has not been analyzed separately from the outcome of patients with progressive disease. DESIGN AND METHODS: In the Spanish Myeloma Group 2000 trial, 80 patients with primary refractory myeloma (49 with stable disease and 31 with progressive disease), i.e. who were refractory to initial chemotherapy, were scheduled for tandem transplants (double autologous transplant or a single autologous transplant followed by an allogeneic transplant). Patients with primary refractory disease included those who never achieved a minimal response (≥ 25% M-protein decrease) or better. Responses were assessed using the European Bone Marrow Transplant criteria. RESULTS: There were no significant differences in the rates of partial response or better between patients with stable or progressive disease. However, 38% of the patients with stable disease at the time of transplantation remained in a stable condition or achieved a minimal response after transplantation versus 7% in the group with progressive disease (P=0.0017) and the rate of early progression after transplantation was significantly higher among the group with progressive disease at the time of transplantation (22% versus 2%; P=0.0043). After a median follow-up of 6.6 years, the median survival after first transplant of the whole series was 2.3 years. Progression-free and overall survival from the first transplant were shorter in patients with progressive disease (0.6 versus 2.3 years, P=0.00004 and 1.1 versus 6 years, P=0.00002, respectively). CONCLUSIONS: Our results show that patients with progressive refractory myeloma do not benefit from autologous transplantation, while patients with stable disease have an outcome comparable to those with chemosensitive disease.

Busulfan 12 mg/kg plus melphalan 140 mg/m2 versus melphalan 200 mg/m2 as conditioning regimens for autologous transplantation in newly diagnosed multiple myeloma patients included in the PETHEMA/GEM2000 study.

BACKGROUND: The aim of this study was to compare the long-term safety and efficacy of oral busulfan 12 mg/kg plus melphalan 140 mg/m(2) and melphalan 200 mg/m(2) as conditioning regimens for autologous stem cell transplantation in newly diagnosed patients with multiple myeloma in the GEM2000 study. DESIGN AND METHODS: The first 225 patients received oral busulfan 12 mg/kg plus melphalan 140 mg/m(2); because of a high frequency of veno-occlusive disease, the protocol was amended and a further 542 patients received melphalan 200 mg/m(2). RESULTS: Engraftment and hospitalization times were similar in both groups. Oral busulfan 12 mg/kg plus melphalan 140 mg/m(2) resulted in higher transplant-related mortality (8.4% versus 3.5%; P=0.002) due to the increased frequency of veno-occlusive disease in this group. Response rates were similar in both arms. With respective median follow-ups of 72 and 47 months, the median progression-free survival was significantly longer with busulfan plus melphalan (41 versus 31 months; P=0.009), although survival was similar to that in the melphalan 200 mg/m(2) group. However, access to novel agents as salvage therapy after relapse/progression was significantly lower for patients receiving busulfan plus melphalan (43%) than for those receiving melphalan 200 mg/m(2) (58%; P=0.01). CONCLUSIONS: Conditioning with oral busulfan 12 mg/kg plus melphalan 140 mg/m(2) was associated with longer progression-free survival but equivalent survival to that achieved with melphalan 200 mg/m(2) but this should be counterbalanced against the higher frequency of veno-occlusive disease-related deaths. This latter fact together with the limited access to novel salvage therapies in patients conditioned with oral busulfan 12 mg/kg plus melphalan 140 mg/m(2) may explain the absence of a survival difference. Oral busulfan was used in the present study; use of the intravenous formulation may reduce toxicity and result in greater efficacy, and warrants further investigation in myeloma patients. (Clinicaltrials.gov identifier: NCT00560053).

Influence of pre- and post-transplantation responses on outcome of patients with multiple myeloma: sequential improvement of response and achievement of complete response are associated with longer survival.

PURPOSE: Complete response (CR) is considered an important goal in most hematologic malignancies. However, in multiple myeloma (MM), there is no consensus regarding whether immunofixation (IF)-negative CR, IF-positive near-CR (nCR), and partial response (PR) are associated with different survivals. We evaluated the prognostic influence on event-free survival (EFS) and overall survival (OS) of these responses pre- and post-transplantation in newly diagnosed patients with MM. PATIENTS AND METHODS: We analyzed 632 patients from the prospective Grupo Español de Mieloma 2000 protocol who were uniformly treated with vincristine, carmustine, cyclophosphamide, melphalan, and predisone/vincristine, carmustine, adryamcine, and dexamethasone induction followed by high-dose therapy and autologous stem-cell transplantation. RESULTS: Post-transplantation response markedly influenced outcomes. Patients achieving CR had significantly longer EFS (median, 61 v 40 months; P < 10(-5)) and OS (medians not reached; P = .01) versus patients achieving nCR, who likewise had somewhat better outcomes compared with patients achieving PR (median EFS, 34 months, P = .07 v nCR; median OS, 61 months, P = .04). EFS and OS and influence of response were similar among older (age 65 to 70 years) and younger (age < 65 years) patients. Similar findings were observed with pretransplantation response, with trends toward EFS (P = .1; P = .05) and OS (P = .1; P = .07) benefit in patients achieving CR versus nCR and PR, respectively. Post-transplantation response was markedly influenced by pretransplantation response; improvements in response were associated with prolonged survival. CONCLUSION: Quality of response post-transplantation, notably CR, is significantly associated with EFS and OS prolongation in newly diagnosed patients with MM. There were trends toward similar associations with pretransplantation response status.

Leucemia aguda de células precursoras mieloides/natural killer de presentación simultánea con leucemia linfática crónica / No disponible

No disponible

Prueba de movilización de los neutrófilos con hidrocortisona intravenosa en el estudio de las neutropenias crónicas idiopáticas. experiencia en 19 casos y utilidad de un nuevo índice diagnóstico / Neutrophil mobilization test with intravenous hydrocortisone in the study of chronic idiopathic neutropenias. Experience with 19 cases and the usefulness of a new diagnostic index

Fundamento: Algunos pacientes con aparente neutropenia crónica benigna presentan trastornos de la distribución de los granulocitos entre los distintos compartimientos fisiológicos, situación que puede ponerse de manifiesto mediante diversas pruebas de movilización. La administración de hidrocortisona intravenosa es la más conocida, pero su realización e interpretación se encuentran poco estandarizadas. Se presentan los resultados de una serie de 19 pacientes con neutropenia periférica crónica idiopática a quienes se realizó la mencionada prueba de acuerdo con criterios homogéneos. Pacientes y método: Se realizó un hemograma basal, seguido de una inyección intravenosa de 200 mg de hidrocortisona, y otro hemograma a las 4 h de la inyección. Se recogieron en cada caso los siguientes datos: recuento basal de neutrófilos en sangre (RBN), recuento final de neutrófilos (RFN), diferencia entre RFN y RBN o incremento (INCR), y el cociente 60 por ciento de INCR/2,0 (* 109/l ) - RBN, al cual denominamos índice de desmarginalización (ID). Resultados: Se observaron tres patrones de respuesta (tres grupos de pacientes): patrón I, con RFN normal e ID superior o igual a 1 (compatible con seudoneutropenia con componente de hipermarginalización); patrón II, con RFN normal e ID inferior a 1 (seudoneutropenia por mecanismos distintos a hipermarginalizacion), y patrón III, con RFN subnormal e ID inferior a 1 (neutropenia verdadera). Al comparar los grupos I y II, no existen diferencias significativas en los RBN ni en los INCR, pero sí en los RFN (p = 0,026) y en el ID (p = 0,026). La comparación entre los grupos I y III arroja significación estadística en los cuatro parámetros (RBN, p = 0,07; RFN, p < 0,001; INCR, p = 0,02, e ID, p < 0,001). No hallamos diferencias entre los grupos II y III. Conclusiones: La prueba de movilización granulocitaria con 200 mg de hidrocortisona intravenosa, estableciendo 4 h de separación entre el hemograma basal y el final, permite diferenciar la seudoneutropenia con componente de hipermarginalización de la neutropenia verdadera. (AU)